J/AJ/113/1197 21 cm Spectra (Haynes+ 1997)
21 cm H I Line Spectra of Galaxies in Nearby Clusters
Haynes M.P., Giovanelli R., Herter T., Vogt N.P., Freudling W.,
Maia M.A.G., Salzer J.J., Wegner G.
<Astron. J. 113, 1197 (1997)>
=1997AJ....113.1197H 1997AJ....113.1197H
ADC_Keywords: Clusters, galaxy ; H I data
Abstract:
A compilation of H I line fluxes, systemic velocities and linewidths
is presented for 840 detected galaxies, mostly in the vicinities of 30
nearby rich clusters out to a redshift of z∼0.04, specifically for use
in applications of the Tully-Fisher distance method. New 21 cm H I
line profiles have been obtained for ∼500 galaxies in 27 Abell
clusters visible from Arecibo. Upper limits are also presented for 246
galaxies for which H I emission was not detected. In order to provide
a homogeneous linewidth determination optimized for Tully-Fisher
studies, these new data are supplemented by the reanalysis of
previously published spectra obtained both at Arecibo and Green Bank
that are available in a digital archive. Corrections for instrumental
broadening, smoothing, signal-to-noise and profile shape are applied,
and an estimate of the error on the width is given. When corrected for
turbulent broadening and viewing angle, the corrected velocity widths
presented here will provide the appropriate line width parameter
needed to derive distances via the Tully-Fisher relation.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
doc.txt 79 113 Author-supplied documentation
table2.dat 98 840 Properties of detected galaxies
table3.dat 66 246 Observational results for non-detections
notes.dat 80 633 Notes to tables 2 and 3
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See also:
VIII/28 : Bell Laboratories H I Survey (Stark+ 1992)
J/AJ/113/22 : Tully-Fisher Relation. I. (Giovanelli+ 1997)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- AGC/UGC AGC (ANNNNNN) or UGC (U NNNNN) number
9- 16 A8 --- Name NGC/IC or other name (G1)
18- 19 I2 h RAh Right ascension, equinox 1950
20- 21 I2 min RAm Right ascension, equinox 1950
22- 25 F4.1 s RAs Right ascension, equinox 1950
27 A1 --- DE- Sign of Declination, equinox 1950
28- 29 I2 deg DEd Declination, equinox 1950
30- 31 I2 arcmin DEm Declination, equinox 1950
32- 33 I2 arcsec DEs Declination, equinox 1950
34- 37 F4.1 arcmin Dmaj Major diameter
38 A1 --- --- [x] (symbol for times)
39- 41 F3.1 arcmin Dmin Minor diameter
43- 44 I2 --- MType ? Numerical Morphological Type
46- 51 F6.2 Jy.km/s ObsFlux Observed HI line flux integral (21cm)
53- 58 F6.2 Jy.km/s CorrFlux Corrected HI line flux integral (21cm)
60- 64 F5.2 mJy RMS RMS noise per channel
66- 71 F6.1 --- SNR Signal-to-noise ratio
73- 77 I5 km/s VHel21 Heliocentric velocity
79- 81 I3 km/s Wobs Observed HI line width
83- 87 F5.1 km/s Wcorr Corrected HI line width
89- 92 F4.1 km/s e_Wobs Error on HI line width
94 A1 --- ACMode [aog] Autocorrelator Configuation Code (1)
95 A1 --- Smo [BH] Smoothing Code (2)
96 A1 --- TFQual [GFSMCA] TF Quality Code (3)
97 A1 --- ClNote [c] c: galaxy is also included in the
tabulation by Giovanelli et al.,
1997 (Cat. J/AJ/113/22)
98 A1 --- Note [*] Flag for Note detailed in notes.dat file
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Note (1): The "autocorrelator code" refers to the configuration of
the final spectrum:
a = 20 MHz/512 channels;
o = 10 MHz/252 channels;
g = 10 MHz/192 channels.
Note (2): The "smoothing code" describes the degree of smoothing
applied to the final spectrum:
H = single hanning only;
B = hanning plus 3 channel boxcar.
Note (3): The "TF quality code" is a qualitative assessment of the
quality of the profile for TF applications:
G = good;
F = fair;
S = single peak;
M = marginal detection;
C = confused.
A = not specified in the paper (for A230196 = IC 860 and A240647)
"F" should be used with caution. Because the width measuring algorithm
is designed for application to two-horned profiles, the widths
measured on single peaked profiles should also be used with caution,
as they may underestimate the true rotation width.
Widths in the latter two categories (M, C) cannot be used for TF
purposes. A designation of marginal detection is given to those cases
in which the signal has not been verified through adequate
reobservation. Confusion is identified only when contamination from
another galaxy in the beam is certain.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- AGC/UGC AGC (ANNNNNN) or UGC (U NNNNN) number
9- 16 A8 --- Name NGC/IC or other name (G1)
18- 19 I2 h RAh Right ascension, equinox 1950
20- 21 I2 min RAm Right ascension, equinox 1950
22- 25 F4.1 s RAs Right ascension, equinox 1950
27 A1 --- DE- Sign of Declination, equinox 1950
28- 29 I2 deg DEd Declination, equinox 1950
30- 31 I2 arcmin DEm Declination, equinox 1950
32- 33 I2 arcsec DEs Declination, equinox 1950
34- 37 F4.1 arcmin Dmaj Major diameter
38 A1 --- --- [x] (symbol for times)
39- 41 F3.1 arcmin Dmin Minor diameter
43- 44 I2 --- Type Numerical Morphological Type
46- 50 I5 km/s VelMin Minimum velocity of spectral range
51 A1 --- --- [-] (hyphen)
52- 56 I5 km/s VelMax Maximum velocity of spectral range
58 A1 --- ACMode [AS] Autocorrelation configuration code (1)
59- 64 F6.2 mJy RMS RMS noise per channel
66 A1 --- Note [*] Flag for Note in notes.dat file
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Note (1): Mode used for the 21cm line observations:
A = all correlator quadrants were centered on the same frequency
S = the search mode was employed
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 7 A7 --- AGC/UGC AGC (ANNNNNN) or UGC (U NNNNN) number
9- 80 A72 --- Note Text of the note (G1)
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Globla notes:
Note (G1): Other names:
NNN-NNN stands for Z NNN-NNN
ANNNN-N stands for [D80] ACO NNNN N
FNNN-NN stands for LSB FNNN-NN
I NNN stands for IC NNN
M+NNNNNN stands for MGC+NN-NN-NN
N NNN stands for NGC NNN
WIEN205 stands for Wineberger 205
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History:
* 09-Jan-2002: For A150009 = Z 394-077, the original position
(050322.8 +022697) was corrected to 050322.8 +022607
Origin: AAS CD-ROM series, Volume 8, 1997 Lee Brotzman [ADS] 02-May-1997
(End) [CDS] 04-Jul-1997